FUCA1 and thyroid cancer: Figure 3D shows that the average activities of FUCA-1 were highest (1373 U/ml) in the TPC-1 cell line, intermediate (1182 U/ml) in the BCPAP cell line and minimal (701 and 504 U/ml) in the CAL62 and 8505C lines, respectively, thus confirming the results of IHC and Real Time PCR with thyroid cancer biopsies and those of Western blotting with thyroid cell lines.